Vibration test service

Vibration Testing Service – Accredited ISO/IEC 17025 Mechanical Endurance and Performance Assessment for the Colombian Market

Vibration testing is an essential mechanical evaluation method used to assess the ability of components, assemblies, and complete systems to withstand the mechanical stresses and dynamic forces induced by vibration during operation, transport, and installation. This test is critical for a wide range of products, including automotive parts, aerospace components, industrial machinery, electronic devices, medical equipment, oil and gas instrumentation, and consumer goods. In the Colombian market, where the Superintendencia de Industria y Comercio (SIC), the Ministerio de Transporte, the Ministerio de Minas y Energía (MinMinas), the Agencia Nacional de Hidrocarburos (ANH), and the Dirección de Impuestos y Aduanas Nacionales (DIAN) enforce strict quality, safety, and reliability standards for products used in demanding environments, the accurate evaluation of vibration resistance is essential for product certification, supplier qualification, quality control in manufacturing, and import-export processes. Our laboratory offers a comprehensive vibration testing service, applying standardized methods that simulate real-world vibration profiles (sinusoidal, random, and shock) to identify resonant frequencies, assess mechanical integrity, and verify functional performance. All tests are performed under our ISO/IEC 17025 (CNAS) accreditation, and the resulting reports are fully accepted by Colombian authorities, making them indispensable for regulatory compliance, product validation, and market access in Colombia.

Test Samples and Equipment We Regularly Examine

Our laboratory receives a wide variety of components, assemblies, and systems for vibration testing. Typical samples include:

• Automotive and transportation components – engine mounts, exhaust systems, control modules, sensors, and interior trim.
• Aerospace and avionics components – flight control systems, navigation equipment, and sensors.
• Industrial equipment and machinery – pumps, compressors, motors, gearboxes, and control panels.
• Electronic devices and consumer electronics – smartphones, laptops, wearables, and power supplies.
• Oil and gas instrumentation – pressure transmitters, flow meters, valves, and control units.
• Medical devices and portable diagnostic equipment – monitors, ventilators, and infusion pumps.
• Defense and military equipment – communication devices, portable power units, and targeting systems.
• Prototype and new product designs – submitted by manufacturers for validation of vibration resistance before series production.
• Components retrieved from field service – for failure analysis and remaining life assessment.

Sinusoidal Vibration Testing – Simulating Periodic and Resonant Vibrations

Sinusoidal vibration testing is used to simulate periodic vibrations, resonant excitations, and constant-amplitude vibration conditions that equipment may encounter during operation or transport. Our methods follow international standards and the requirements of the Colombian industrial, automotive, and defense sectors.

• Sinusoidal vibration test (IEC 60068-2-6 / ISO 8318 / NTC 6600) – the test item is mounted on an electrodynamic shaker and subjected to a sinusoidal vibration with a specified frequency range (typically 10 Hz to 2000 Hz), amplitude (e.g., 0.5 mm or 2 g), and sweep rate (1 octave/min). The vibration is applied in three mutually perpendicular axes (X, Y, Z) for a specified duration (e.g., 10 cycles per axis). The test item is monitored for any visible damage, loosening, or functional failure, and its output is continuously checked for intermittent faults. We report the vibration profile (frequency range, amplitude, sweep rate), the duration, and any anomalies (e.g., resonance, signal dropout, or mechanical damage).
• Resonance search and dwell test (IEC 60068-2-6 – resonant frequency detection, NTC 6601) – during the sine sweep, the test item is monitored for mechanical resonance, indicated by a sudden increase in vibration amplitude or a change in the output signal. When a resonance is detected, the item is subjected to a dwell at that resonant frequency for a specified time (e.g., 30 minutes or 1 hour) to evaluate the effect of sustained resonance on the item’s integrity. We report the resonant frequencies, the dwell duration, and the item condition after the dwell.
• Sine vibration at constant amplitude (NTC 6602 – for products with known operating frequencies) – the test is performed at a fixed frequency (e.g., the critical frequency of the product) with a specified amplitude for an extended period. We report the vibration level, duration, and item performance.
• Sine vibration with variable amplitude (NTC 6603 – simulated transport vibrations) – the amplitude is varied in steps (e.g., from 1 g to 5 g) to simulate different stages of transport or different environmental conditions. We report the step profiles and the item condition after each step.
• Sinusoidal vibration at different temperatures (NTC 6604 – combined thermal and vibration stress) – the vibration test is performed inside a thermal chamber at a specified temperature (e.g., 60 °C or -20 °C) to simulate the combined effect of thermal and mechanical stress. We report the vibration profile, the temperature, and the item performance under combined stress.

Random Vibration Testing – Simulating Real-World Wideband Vibrations

Random vibration testing is used to simulate the complex, broadband vibration spectra encountered in vehicles (road, rail, air), heavy machinery, and industrial environments. This test is essential for qualifying products for transport and operational use in the Colombian automotive, mining, and oil and gas industries.

• Random vibration test (IEC 60068-2-64 / ISO 16750-3 / NTC 6610) – the test item is subjected to a random vibration power spectral density (PSD) profile that simulates the vibration spectrum of a vehicle, aircraft, or heavy machinery (e.g., as specified in the ISO 16750 standard for automotive electronics). The PSD is typically 0.01 to 0.1 g²/Hz over a frequency range of 10 to 1000 Hz, with an overall RMS acceleration level of 2 to 5 g. The test duration is typically 30 minutes to 4 hours per axis. We report the PSD profile, the total RMS acceleration, the duration, and the item performance during and after the test.
• Random vibration with automotive profile (ISO 16750-3 – for vehicle electronic components) – we use the standard automotive random vibration profile for components mounted on the vehicle body (e.g., in the engine compartment, passenger cabin, or wheel suspension). We report the item performance and compliance with the standard.
• Random vibration with aerospace profile (MIL-STD-810G / NTC 6611 – for airborne equipment) – we use a random vibration profile for airborne equipment (e.g., as defined in MIL-STD-810G, Method 514.7) for components installed in aircraft, helicopters, or unmanned aerial vehicles. We report the item performance and compliance with the standard.
• Random vibration with transportation profile (ASTM D4169 / NTC 6612 – for packaged products) – we use a random vibration profile (e.g., the truck, rail, or air profile) for testing the vibration resistance of packaged products, simulating the vibration spectrum of a truck, train, or aircraft during transport. We report the package integrity, the product condition, and any loose components or damage.
• Fatigue damage evaluation under random vibration (NTC 6613 – cumulative damage analysis) – using the measured PSD profile and the material’s fatigue properties, we estimate the cumulative fatigue damage (using the Palmgren-Miner rule) and the remaining life of the product. We report the predicted service life and the damage accumulation.
• Random vibration with post-test functional verification (NTC 6614 – electrical and mechanical checks) – after the random vibration test, we perform functional tests (e.g., electrical continuity, insulation resistance, output signal verification, and mechanical inspection) to verify that the test item has not suffered any damage. We report the functional test results and any deviations from pre-test performance.

Mechanical Shock and Pulse Impact Testing – Simulating High-Impact Transient Events

Mechanical shock and pulse impact testing evaluate the ability of products to withstand sudden, high-energy transient events such as drops, collisions, explosive shocks, and ballistic impacts. This testing is essential for products used in defense, mining, and heavy equipment applications in Colombia, and follows international standards such as MIL-STD-810G and IEC 60068.

• Mechanical shock test (IEC 60068-2-27 / MIL-STD-810G Method 516.8 / NTC 6620) – the test item is mounted on a shock-testing machine and subjected to a specified shock pulse (e.g., 30 g, 11 ms half-sine pulse, or 50 g, 6 ms sawtooth pulse) applied in three axes, both positive and negative directions. The number of shocks (e.g., 3 shocks per axis per direction) is specified. We report the shock pulse profile, the number of shocks, and the item’s condition (visual and functional) after the test.
• Impact pulse test (NTC 6621 – for components in industrial equipment) – the test item is subjected to a high-amplitude, short-duration impact pulse (e.g., 100 g, 6 ms half-sine) to simulate the impact of a heavy object, a dropped tool, or a collision. We report the impact pulse profile, the number of impacts, and the item condition.
• Bump test (IEC 60068-2-29 / NTC 6622 – for transport simulations) – the test item is subjected to a series of repetitive bumps (e.g., 10 g, 16 ms half-sine) at a frequency of 1 to 3 Hz for a specified number of bumps (e.g., 1000 bumps). We report the bump profile, the number of bumps, and the item condition.
• Drop test (ISTA 1A / NTC 6623 – for packaged products) – the packaged test item is dropped from a specified height (e.g., 1.0 m, 1.2 m) onto a hard surface (concrete or steel), on its faces, edges, and corners. The product is inspected for damage and the package is inspected for deformation. We report the drop height, drop orientation, and the condition of the product and packaging.
• Explosive shock test (MIL-STD-810G Method 517.1 – for military and offshore applications) – for products used in environments with explosive shock hazards, we perform an explosive shock test using a shock testing machine or a shock simulator, and we measure the response of the test item. We report the shock pulse profile and the item performance.
• Shock response spectrum (SRS) analysis (NTC 6624 – for critical components) – we analyze the shock response spectrum of the test item using an accelerometer attached to the component. The SRS is calculated from the measured acceleration-time history. We report the SRS and compare it with the shock tolerance criteria.

Functional and Performance Monitoring during Vibration Testing

During vibration testing, it is critical to monitor the test item's electrical and functional performance in real time to detect intermittent failures, signal degradation, or changes in operating characteristics. Our advanced data acquisition systems allow continuous monitoring, providing valuable data for analyzing the relationship between vibration exposure and functional degradation.

• Real-time signal monitoring and data acquisition (NTC 6630 – continuous performance monitoring) – the test item's electrical output (voltage, current, switching signal, or digital communication) is continuously recorded during the vibration test using a high-speed data logger (sampling rate > 1 kHz). We monitor for signal dropout, false pulses, spikes, or changes in the output level (e.g., drift in analog output). We report the occurrence of any anomalies, the time and vibration conditions at which they occurred, and the overall stability of the item.
• Periodic functional verification (NTC 6631 – check points during the test) – at specified intervals (e.g., every 8 hours), the test item is subjected to a full functional verification test (e.g., electrical continuity, insulation resistance, output signal verification, and mechanical inspection). We report the functional test results at each check point and identify any degradation.
• Insulation resistance and dielectric strength monitoring (ASTM D257 / NTC 6632 – for electrical components) – the insulation resistance and dielectric strength (2 kV, 50 Hz) are measured at intervals during the vibration test, to detect any degradation of the insulation due to vibration-induced loosening or cracking. We report the insulation resistance (in MΩ) and the dielectric withstand result.
• Thermal monitoring (NTC 6633 – temperature measurement during vibration) – we use thermocouples or thermal cameras to monitor the temperature of critical components (e.g., power electronics, bearings, motors) during the vibration test, to detect any overheating caused by friction or vibration-induced stress. We report the temperature profile and any overheating events.
• Visual inspection intervals (NTC 6634 – periodic visual checks) – the test item is visually inspected at regular intervals for loose parts, cracks, deformation, or any visible damage. We report the observations and the time of occurrence.

Complementary Analyses – Frequency Response, Damping, and Mechanical Integrity

To fully understand the vibration behavior of the test item and to identify the root cause of any failures, we complement the dynamic tests with frequency response analysis, damping measurement, and mechanical integrity assessment. These analyses are essential for product improvement and for certification by the SIC and ANH.

• Frequency response function (FRF) measurement (NTC 6640 – modal analysis) – using an accelerometer and a signal analyzer, we measure the frequency response function of the test item (ratio of output acceleration to input force). The FRF reveals the natural frequencies and damping characteristics. We report the FRF plot and the dominant modes.
• Damping ratio measurement (NTC 6641 – logarithmic decrement method) – from the free decay of the vibration signal after a shock or a resonant excitation, we calculate the damping ratio (ζ) of the test item. We report the damping ratio and the critical damping percentage.
• Transmissibility measurement (NTC 6642 – for isolating mounts and anti-vibration devices) – for components mounted on anti-vibration mounts, we measure the transmissibility (ratio of output vibration to input vibration) as a function of frequency. We report the transmissibility curve and the isolation performance.
• Post-test visual and mechanical inspection (NTC 6643 – detection of cracks, deformations, and loose parts) – after the vibration and shock tests, the test item is disassembled (if necessary) and inspected for cracks, deformations, loose fasteners, or any visible damage. We report the observations and the severity of any damage.
• Electrical and functional verification (NTC 6644 – continuity, insulation, and output testing) – we perform electrical tests (e.g., continuity, insulation resistance, and functional output verification) before and after the tests to detect any intermittent faults or permanent damage. We report the functional test results and the changes relative to the pre-test baseline.
• Microscopic inspection of solder joints and PCB (NTC 6645 – X-ray and SEM inspection) – for electronic components, we perform X-ray inspection to detect solder joint cracks, component shift, or PCB damage. We report the X-ray images and any observed defects.

Test Report and Recognition in the Colombian Industrial, Automotive, and Energy Sector

All procedures described are within the scope of our ISO/IEC 17025 accreditation, with equipment calibrated periodically (vibration shakers, shock testers, accelerometers, data loggers, thermal chambers, etc.) and traceability to international standards (NIST, PTB). Our test reports are issued in Spanish and include:

• Full identification of the test item (product name, model, serial number, manufacturer, lot number, and intended application).
• Detailed description of the test methods applied (IEC/ISO/MIL/ASTM/NTC standards, vibration profile, shock pulse, temperature, and duration).
• Numerical results: resonant frequencies (Hz), transmissibility (%), damping ratio (ζ), shock pulse amplitude (g), pulse duration (ms), number of shocks, fatigue damage (%), and functional performance (pass/fail).
• Graphical data: vibration profiles (PSD, sine sweep), shock pulse profiles, FRF plots, and transmissibility curves.
• Comparative tables against the values specified by the client or against the limits of the NTC 6600 (Sine vibration), NTC 6610 (Random vibration), NTC 6620 (Shock), and the requirements of the SIC, MinMinas, ANH, Ministerio de Transporte, and DIAN for industrial, automotive, and mining equipment certification.
• Photographs and micrographs of the test item before and after testing, and in case of failure, images of the damaged areas (cracks, loose parts, or broken components).
• Recommendations for design improvement (e.g., increasing stiffness, adding damping, using resilient mounts, changing materials) and for installation (e.g., mounting orientation, securing methods).
• Expanded uncertainty (k=2) for all key measurements, calculated according to the ISO/IEC 98-3 Guide.

These reports are fully accepted by the Superintendencia de Industria y Comercio (SIC) for product registration and quality certification, by the Ministerio de Minas y Energía (MinMinas) and the Agencia Nacional de Hidrocarburos (ANH) for the validation of equipment used in the mining, oil, and gas sectors, by the Ministerio de Transporte for automotive and transportation component homologation, and by the Dirección de Impuestos y Aduanas Nacionales (DIAN) for tariff classification and quality verification in the import of vibration-sensitive and safety-critical equipment. Additionally, we offer consulting services for the design of vibration-resistant products, the selection of anti-vibration mounts and dampers, and the implementation of quality control programs for vibration and shock performance, contributing to the safety, reliability, and durability of products in the diverse and demanding industrial and transportation environments of Colombia, from the high-altitude mines to the coastal and urban infrastructures.